What is strays?

Strays is a small Mac app that lives in your menu bar and shows you every network port your computer is currently listening on, grouped by the project folder that started it. If you write code, you probably run local servers all the time, and now AI coding assistants like Claude Code or Codex spin up even more of them in the background. After a while you end up with a pile of leftover processes you cannot account for, and Strays exists to make that mess visible again. The app recognizes common tools such as Vite, Next.js, Node, Flask, Postgres, Redis, and Docker, and labels each port with what it thinks is running there. It also shows whether a port is only reachable from your own machine or exposed more widely on your network, using color coded icons so you can spot a risky open port quickly. Stopping a server is a single click, and ordinary dev servers get a short grace period with an undo option before they are actually shut down, while databases or exposed ports need a confirmation first. Servers that have sat idle for a while are flagged so you can clean them up in one batch. Beyond ports, Strays also shows the AI coding sessions currently running on your machine, grouped by project alongside the ports they created, including which model was used and roughly how much it has cost so far. All of this information is read locally from files already on your computer such as session logs, and nothing is sent anywhere over the network. The app is written in Swift for macOS and works by running simple, unprivileged system commands like lsof and ps rather than needing a background daemon or elevated permissions. It can be installed through Homebrew or as a downloadable app, and it is released under the MIT license.